WHO OUT THERE IS A GASTER FAN?
Undertale

Nyagh! A human! Call the guards!
Wait a minute, that's my job!
To capture and nab you won't be hard!
This maze is made with electric charge!
Wait, how did you get this far?
It took three weeks to erect this part!
I genuinely didn't expect this, darn!
How did you correctly guess this path?
I am Papyrus! Traps set! Armed and ready!
There's medals on my armour already, oh, plus some spaghetti
You're nervous! But, oh, that is good spaghetti
Where was I? I keep on forgetting
I am Papyrus! Best chef in the king's brigade!
With the culinary skills to leave you flambéed!
It's a shame that after you taste my blade
You won't have space for my Bolognese! (Ha-ha!)

Sans: 9 (after you beat him, it's consistent)
Undyne the Undying: 7.9 (more variability)
Omega Flowey, Asriel, Asgore and Mettaton EX: 6.5 (decent challenges)
Muffet, and Undyne: 4.5 (normal)
Papyrus, Mad Dummy, and Toriel: 3 (require braincells at least, but you can't really lose)
Napstblook: 1 (not a boss)
Mettaton NEO: 0.1 (pressing that fight button is tricky)
Temmie: 100 (tem... ah, -- ecsplod frum cut ness!)
YES!!